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* ALSA: oxygen: fix SPI clocks slower than 6.25 MHzClemens Ladisch2011-01-101-2/+2
| | | | | | | | Fix wrong register bits for SPI clock cycle times longer than 160 ns, and adjust the polling loop timeout for these speeds. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* sound: oxygen: work around MCE when changing volumeClemens Ladisch2009-09-071-10/+1
| | | | | | | | | | | | | | | | | When the volume is changed continuously (e.g., when the user drags a volume slider with the mouse), the driver does lots of I2C writes. Apparently, the sound chip can get confused when we poll the I2C status register too much, and fails to complete a read from it. On the PCI-E models, the PCI-E/PCI bridge gets upset by this and generates a machine check exception. To avoid this, this patch replaces the polling with an unconditional wait that is guaranteed to be long enough. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Tested-by: Johann Messner <johann.messner at jku.at> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* sound: oxygen: automatically restore overwritten EEPROMClemens Ladisch2009-02-191-0/+16
| | | | | | | | | | | | If the EEPROM was partially overwritten (which seems to happen before the OS is booted), restore its entire contents by deducing it from the remaining information. This does not have any effect on the Linux driver, which works even with incomplete information in the EEPROM, but it makes other drivers work again. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* sound: oxygen: handle cards with broken EEPROMClemens Ladisch2009-02-191-0/+15
| | | | | | | | | | | | | | | | | Under as yet unknown circumstances, the first word of the sound card's EEPROM gets overwritten. When this has happened, we cannot rely on the subsystem IDs that the kernel reads from the PCI configuration registers. Instead, we read the IDs directly from the EEPROM and do the ID matching manually. Because the model-specific driver cannot determine the model before calling oxygen_pci_probe(), that function now gets a get_model() callback as parameter. The customizing of the model structure, which was formerly done by the probe() callback, also has moved into get_model(). Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: oxygen: wait for ACK when resetting UARTClemens Ladisch2008-09-241-0/+1
| | | | | | | | After sending a reset command to the UART, wait some time for the ACK to be generated (and to be read and dropped by the interrupt handler) before sending the next command. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
* ALSA: oxygen: add UART I/O functionsClemens Ladisch2008-09-221-0/+21
| | | | | | | Add functions to allow model drivers to communicate with external chips by doing I/O with the not-used-for-MIDI UART. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
* [ALSA] oxygen: save register writesClemens Ladisch2008-05-191-4/+18
| | | | | | | | | Save the written values of all CMI8788 and AC97 registers and of some of the DAC/ADC registers so that it is possible to restore the register state later. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [ALSA] oxygen: add I2C supportClemens Ladisch2008-04-241-2/+21
| | | | | | | Add a function to write I2C registers. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] oxygen: use AC97 interruptClemens Ladisch2008-01-311-8/+16
| | | | | | | | After an AC97 register read or write, use the AC97 interrupt instead of polling to wait for the access to be completed. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [ALSA] oxygen: reduce SPI clock frequency for AK4396/WM8785Clemens Ladisch2008-01-311-1/+1
| | | | | | | | According to the datasheets, the SPI clock cycle must be at least 200 ns for the AK4396 and the WM8785, so we cannot use the default 160 ns. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [ALSA] oxygen: add register definitionsClemens Ladisch2008-01-311-2/+2
| | | | | | | Add more symbols for registers and register fields. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [ALSA] Remove sound/driver.hTakashi Iwai2008-01-311-1/+0
| | | | | | | | | | | | This header file exists only for some hacks to adapt alsa-driver tree. It's useless for building in the kernel. Let's move a few lines in it to sound/core.h and remove it. With this patch, sound/driver.h isn't removed but has just a single compile warning to include it. This should be really killed in future. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* [ALSA] add CMI8788 driverClemens Ladisch2008-01-311-0/+194
Add the snd-oxygen driver for the C-Media CMI8788 (Oxygen) chip, used on the Asound A-8788, AuzenTech X-Meridian, Bgears b-Enspirer, Club3D Theatron DTS, HT-Omega Claro, Razer Barracuda AC-1, Sondigo Inferno, and TempoTec HIFIER sound cards. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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